linux-kernel - [PATCH] memory tier: rename destroy_memory_type() to put_memory

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Date:   Thu, 6 Jul 2023 14:39:05 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>, <dan.j.williams@...el.com>,
        <vishal.l.verma@...el.com>, <dave.jiang@...el.com>
CC:     <ying.huang@...el.com>, <nvdimm@...ts.linux.dev>,
        <linux-cxl@...r.kernel.org>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>, <linmiaohe@...wei.com>
Subject: [PATCH] memory tier: rename destroy_memory_type() to put_memory_type()

It appears that destroy_memory_type() isn't a very good name because
we usually will not free the memory_type here. So rename it to a more
appropriate name i.e. put_memory_type().

Suggested-by: Huang, Ying <ying.huang@...el.com>
Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 drivers/dax/kmem.c           | 4 ++--
 include/linux/memory-tiers.h | 4 ++--
 mm/memory-tiers.c            | 6 +++---
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/dax/kmem.c b/drivers/dax/kmem.c
index 898ca9505754..c57acb73e3db 100644
--- a/drivers/dax/kmem.c
+++ b/drivers/dax/kmem.c
@@ -264,7 +264,7 @@ static int __init dax_kmem_init(void)
 	return rc;
 
 error_dax_driver:
-	destroy_memory_type(dax_slowmem_type);
+	put_memory_type(dax_slowmem_type);
 err_dax_slowmem_type:
 	kfree_const(kmem_name);
 	return rc;
@@ -275,7 +275,7 @@ static void __exit dax_kmem_exit(void)
 	dax_driver_unregister(&device_dax_kmem_driver);
 	if (!any_hotremove_failed)
 		kfree_const(kmem_name);
-	destroy_memory_type(dax_slowmem_type);
+	put_memory_type(dax_slowmem_type);
 }
 
 MODULE_AUTHOR("Intel Corporation");
diff --git a/include/linux/memory-tiers.h b/include/linux/memory-tiers.h
index fc9647b1b4f9..437441cdf78f 100644
--- a/include/linux/memory-tiers.h
+++ b/include/linux/memory-tiers.h
@@ -33,7 +33,7 @@ struct memory_dev_type {
 #ifdef CONFIG_NUMA
 extern bool numa_demotion_enabled;
 struct memory_dev_type *alloc_memory_type(int adistance);
-void destroy_memory_type(struct memory_dev_type *memtype);
+void put_memory_type(struct memory_dev_type *memtype);
 void init_node_memory_type(int node, struct memory_dev_type *default_type);
 void clear_node_memory_type(int node, struct memory_dev_type *memtype);
 #ifdef CONFIG_MIGRATION
@@ -68,7 +68,7 @@ static inline struct memory_dev_type *alloc_memory_type(int adistance)
 	return NULL;
 }
 
-static inline void destroy_memory_type(struct memory_dev_type *memtype)
+static inline void put_memory_type(struct memory_dev_type *memtype)
 {
 
 }
diff --git a/mm/memory-tiers.c b/mm/memory-tiers.c
index 1719fa3bcf02..c49ab03f49b1 100644
--- a/mm/memory-tiers.c
+++ b/mm/memory-tiers.c
@@ -560,11 +560,11 @@ struct memory_dev_type *alloc_memory_type(int adistance)
 }
 EXPORT_SYMBOL_GPL(alloc_memory_type);
 
-void destroy_memory_type(struct memory_dev_type *memtype)
+void put_memory_type(struct memory_dev_type *memtype)
 {
 	kref_put(&memtype->kref, release_memtype);
 }
-EXPORT_SYMBOL_GPL(destroy_memory_type);
+EXPORT_SYMBOL_GPL(put_memory_type);
 
 void init_node_memory_type(int node, struct memory_dev_type *memtype)
 {
@@ -586,7 +586,7 @@ void clear_node_memory_type(int node, struct memory_dev_type *memtype)
 	 */
 	if (!node_memory_types[node].map_count) {
 		node_memory_types[node].memtype = NULL;
-		destroy_memory_type(memtype);
+		put_memory_type(memtype);
 	}
 	mutex_unlock(&memory_tier_lock);
 }
-- 
2.33.0